Derivatives of diphenyl synthetic estrogens



United States Patent We 3,198,846

Patented Aug. 3, 1965 3,198,840 ing with the halogen element of the propene. Examples DERIVATIVES 0F DIPIENYL SYNTHETIC of such alkaline compounds are barium hydroxide, cal- ESTRQGENS cium carbonate, potassium carbonate, or sodium hydrox- Emil Kaiser, Chicago, and Byron M. Shinn, Western ide. The reaction is preferably carried out in an organic Springs, IlL, assigns-s, by mesne assignments, to 5 solvent which is nonreactive with respect to the derivaigg gagg P Y, a corporation 0f tives. Examples of such organic solvents are met-hylethylketone, acetone, benzene and the like.

No Drawing; 28,238 As indicated, halomethylpropene, such as the bromide,

excess of the propene over the theoretical amount required is added. The diphenyl starting material and the propene halide may be mixed in an organic solvent and heated in the presence of the alkaline halide receptor for several hours, usually at refluxing temperatures, to complete the reaction. The formation of insoluble material ordinarily indicates the reaction completion. This insoluble mate- This invention relates to methylallyl derivatives of diphenyl synthetic estrogens. More particularly, this invention relates to disubstituted methyl-allyl derivatives of hexane, hexene and hexadiene, and to methods for their preparation. The methylallyl derivatives of our invention are disubstituted by a radical having the following structure:

rial is then filtered 01f, preferably while the solvent is hot, and recovery and purification of the end product may then be achieved by known procedures.

The reaction of hexestrol with Z-methylallyl halides to wherein R and R represent hydrogen and a methylallyl form hexestrol-di(Z-methylallyl) ether is described by the radical, provided that when R is hydrogen R is a methylfollowin formulae! 2 5 C2115 alkaline compound Ho-'o -b--o11 2c112=c-c112x l solvent H r H CH3 z s 2 5 oH2=ocH2o-'b--c-earn-(horn H H 1 CH3 H3 allyl radical, and that when R is hydrogen R is a methyl- In similar fashion benzestrol may be reacted with a 3- allyl radical. methylallyl-l-halide in the following manner to form Kaiser et al., in US. Patents 2,502,324 and 2,502,325, benzestrol-di(:3-methylallyl) ether:

C H 0 H C 11 introduced allyl substituents into the molecules of syn- Reactions of other diphenyl estrogens with methylallyl thetic or artificial estrogens, resulting in decreased eshalides to form diethylstilbestro'l-di(3-methylallyl) ether, trogenic activity. By introducing methylallyl substituents diethylstilbest-rol-di(2methylallyl) ether, dienestrol-di(3- into synthetic estrogens further desirable modifications in methylallyl) ether, dienestrol-di(Z-methylallyl) ether, heX- the physiological activity of these compounds has been estroldi(3-methylallyl) ether and benzestroldi(2-methylachieved. The compounds of this invention are useful allyl) ether are comparable. as intermediates in the production of certain diphenyl We have discovered further that the bis(methylallyloxysynthetic estrogen derivatives, and as essentially non-esphenyl) hexanes, hexenes, and hexadienes prepared actrogenic growth promotants in the feeding of livestock cording to the above described method may be converted and poultry. to bis(3-methylallyl-4-hydroxyphenyl) derivatives by heat- We have found that the products of our invention may ing the first named compounds at about refluxing temperbe prepared by using diphenyl estrogens such as diethylatures with a suitable solvent such as diethylaniline or distilbestrol, hexestrol, dienestrol and benzestrol. Prefermethylaniline. The reaction, preferably carried out in an ably the meso forms of these compounds are employed inert atmosphere such as nitrogen gas, is usually combut our derivatives may be prepared from various mixpleted in about 6 hours. Lower temperatures may require tures of the meso and racemic forms of the synthetic essomewhat longer treatment times. The solvent filtrate trogens. may then be contacted with a dilute acid solution such as The methylallyl derivatives of this invention may be obhydrochloric acid or other suitable acid and recovered tained by reacting a suitable diphenyl estrogen and a haloand purified by well understood procedures. methylpropane. Preferably the reaction is conducted in The reaction to prepare 3,3'-di( 2-methyla-llyl) hexestrol the presence of an alkaline compound capable of reactfrom the ether is described by the following:

2 5 V z s Q} (5 Solvent heat CH C-CHzO C--- OCHC=CH2 (I: H H Claisen H H rearrangement CH2=C CH3 CHg--C=CH l 2 s 2 s I iodide, or chloride may be employed. Preferably a slight 3 d The rearrangement of other diphenyl estrogen ethers to We claim: 3,3-di(methylallyl) compounds such as 3,3'-di(1-rnethyl- 1. A compound selected from the class consisting of allyl) benzestrol, 3,3'-di('2-methylallyl) benzestrol and 3, hexane, hexene, and hexadiene derivatives, said compound 3-di(1-methylallyl) hexestrol may be similarly accomhaving the following structure:

plished, preferably by refluxing in a nitrogen containing solvent which acts as a diluent.

' RI R The reaction .for preparing 3,3-di(1-methylallyl) di- I I enestrol from dienestrol-di(:3-methylallyl) ether is illus- RQ o trated by the following formulae:

Slmllafly rdmz'methylaluyn dlenestrol may be prewherein R and R are selected from a group consisting of pared. The reaction to prepare 3,3-di(1-methylallyl) di- 1 I hydrogen and a methylallyl radical, provided that when ethylstilbestrol from d1 thylstilbestrol d1(3 methyla ly R 15 y g is a methylanyl radical and that when other is illustrated by the following formulae:

By similar reaction 3,3-di(2-rnethylallyl) diethylstilbes- R is hydrogen R is a methylallyl radical and R is selecttrol may be prepared. ed from the group consisting of:

Our invention will be more fully illustrated by the fol- CH3 Gm lowing specific examples of the preparation of our non-es- I trogenic derivatives of synthetic estrogens: CZHE 6 fif C=?; H-CH; C-C- EXAMPLE I 02115 Preparation of hexestrol-di(Z-methylallyl) ether and CH3 C2115 C235 90 grams (0.333 mole) of hexestrol, 63 grams. (0.7 I

mole) of 3-chloro-2-methylpropene, and 100 grams (0.72

mole) of anhydrous potassium carbonate were added to A compound having the formulae:

250 ml. of 2-butanone. This mixture was stirred and R R refluxed for hours. The insoluble material was filtered I 02115 $2136 I off while the solvent was hot, the solid washed with 2- R0-i7==c C OR butanone, and the combined filtrates evaporated under reduced pressure. The residue was crystallized from meth- 45 wherein R and R are selected from a group consisting of anol and 70 grams of the crude hexestrol-di(2-methylalhydrogen and a methylallyl radical, provided that when R lyl) ether was obtained with a melting point of 86 to 88 is hydrogen R is a methylallyl radical, and that when R C. After three recrystallizations, the ether had a meltis a hydrogen R is a methylallyl radical.

ing point of 90.5-91.5 C. 3. A compound having the formulae:

R R EXAMPLE II 021-15 (32115 Preparation 0) 3,3-di(methylallyl)hexestrol gg-0lt grams of hextrol'di'a'mathylanynether was wherein R and R are selected from a rou consistin U of fiuxed with 100 ml. of N.-diethylan1l1ne for 4 hours. The hydrogen and a methylanyl radical f then lien solution was kept in the cold overnight. Crystals were is a hydrogen R is a methylauyl radical and that when formed and these were collected and recrystalhzed from R is hydrogpn is methylanyl a solvent mixture consisting of one volume of carbon 4 A l th tetrachloride and 2 volumesof Skelly F. Yield of pure compound having g formula 3,3'-di(2-methylallyl)hexestro1 was 4.7 grams, MP. 116 0 E (3H3 118 C. The diethylaniline filtrate was added to 2 N I OH CH aqueous hydrochloric acid and this mixture was extracted with ether. The ether extract was thoroughly washed with water, dried over sodium sulfate and the ether evaporated. h i R a d R re lected from a group consisting of The residue I recrystallized from a 132 l l' of hydrogen and a methylallyl radical, provided that when bon tetrachloride and Skelly F. and the additional 9.5 R is a hydrogen R is a methylallyl radical, and that when grams of 3,3-di(2-methylallyl) hexestrol was obtained. i h d R i methylanyL Total yield of 3,3-di(2-methylallyl) hexestrol was 14.2 5 A compound h i the for ul grams.

The foregoing description has been given for clearness f 011 115 0 1-15 of understanding only and no unnecessary limitations 0 should be understood therefrom as it will be apparent to R those skilled in the art that obvious modifications may H H H be resorted to without departing from the basic concept wherein R and R are selected from .a group consisting of and spirit of this invention. hydrogen and a methylallyl radical, provided that when 5 6 R is hydrogen R is a methylallyl radical, and that when References Cited by the Examiner R is hydrogen R is methylallyl.

6. 3,3'-di(2-rnethylallyDhexestrol. 7 UNITED S.TATES PATENTS 7. A method for preparing the di-2-methylallyl ether 250-324 3/50 E E et of hexestrol comprising reacting hexestrol with a Z-methyl- 5 2,5 02,325 3/50 halser et 260-613 allyl halide by refluxing in the presence of an alkaline halide acceptor compound and separating the insoluble LEON ZITVER Primary Exammer' reaction product therefrom. CHARLES B. PARKER, Examiner.

UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3,198,840 August 3, 1965 Emil Kaiser et a1.

It is hereby certified that error appears in the above numbered patent requiring correction and that the said Letters Patent should read as corrected below.

Columns 3 and 4, lines 10 to 18, in the equation the structure between the phenyl rings, both occurrences, should appear as shown below instead of as in the patent:

same columns, lines 22 to 29, the left-hand portion of the equation should appear as shown below instead of as in the patent:

CH -CH=CH-CH O- column 3, line 53, for "-di(methyla11yl)hexestrol", in italics, read -di(2-methylallyl)hexestrol in italics; line 54, for "hexestrol-di-(Z-methylallyl)" read hexestroldi(2- methylallyl) line 55, for "N." read N- Signed and sealed this 16th day of August 1966.

- (SEAL) "Attest:

ERNEST W. SWIDER EDWARD J. BRENNER Attesting Officer Commissioner of Patents 

1. A COMPOUND SELECTED FROM THE CLASS CONSISTING OF HEXANE, HEXENE, AND HEXADIENE DERIVATIVES, SAID COMPOUND HAVING THE FORMULA STRUCTURE: 